Abstract
Intestinal anthrax was diagnosed in 2 pigs slaughtered. Local hemorrhage with pseudomembrane formation was found in the jejunum of the 2 pigs. Mesenteric lymph nodes enlarged. Carbuncles were observed on the surface of the spleen and reddish spots presented in the liver in pig No.1.Histologically, hemorrhagic-diphtheritic lesions were seen in the intestine of the two pigs. The intestinal wall was very thick in pig No.1. Hemorrhagic, fibrinous, necrotic, and inflammatory changes and the presence of bacilli were observed in the mesenteric lymph nodes and carbuncles of the spleen of pig No.1. In the liver focal necrosis and hemorrhage were noticed.Electron microscopically, two types of bacilli which had a capsule or spore were seen in the intestine of pig No.1. One was considered to be Bacillus anthracis, and the other Clostridium sp. Neither type was phagocytized by neutrophils or macrophages.
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